Staple



Jan. 27,193i'.

R. w. JEWELL 1,790,348

STAPLE Filed Nov. 4, 1926 L4 3 \Mi z p N VENT OR Patented Jan. 27, 1931.

UNHTED s'rares RAYMOND W. JEWELL, BINGHAMTON, NEW YORK STAPLE Application filed November' l, 1926. serials). 146,174.

My invention relates primarily to the provision of a novel staple for securing together the abutting edges of sheets of plaster board or compo board, or other building mate- :1 rial used in wall and like construction.

The primary object of my invention is to provide a staple which clinches the boards from [the rear side thereof so as not to be visible from the front, therebyeliminating the unsightliness of common staples and other devices in use, which are driven in from the front side, and frequently resulting in spoiling of the board at the point of driving.

Another object is to provide a staple which will at all times closely bindor clinch the adjacent edges of the board tightly together regardless of shrinkage or warping either of the boards or their support.

Other objects and advantages in details of construction and operation will be apparent as thedescription proceeds, reference being had to the accompanying drawing wherein like reference numerals indicate like parts.

Figure 1 is a detail perspective View of my improved staple.

F igure@ is a detail front view of a portion of a Wall, illustrating the application of my staple.

Figure'3 is a detail top plan view partly in section illustrating clearly the method of use of the staple.

In recent years, there has come into general use in the building tradea plaster board or compo board, which is rapidly being substituted for the ordinary plaster heretofore used. This plaster board generally comes in sheets of given widths and is secured to the vertlcal supportlng studs com- 40 prlsin g the framework of the structure. Due

to the fact that these sheets of plaster boards must besecured together edge to edge, considerable difficultyhas arisen in their practical use for the reason that when the sheets are nailed or otherwise fastened. to their supporting studs frein the front siee, there are'left in full view, theheads of the staples or nails, frequently rendered more unsightly by the hammering resulting in abrasive marl-Is on the board itself. Furthermore, it

has been found practically impossible in the method now in use, to secure the sheets of plaster boards to their support in such a manner that upon shrinkage of the support or warping or pulling away thereof, the

edges of the plaster board sheetswill not pull away from each other, leaving a crack or opening between them. Various means have been tried to overcome this difficulty,

but the most effective meansso far has been the covering of the "crack or opening by means of panels secured to the compo board.

By my invention, 1 eliminate the necessity of such panels and of all .the unsightliness above described.

In the drawing, the reference numeral 1 refers generally to my improved staple comprising the relatively thin, flat surface 2, provided centrally with the elongated opening or slot 3, and at either end with the prongs 4', tapered tosharp points. It will be observed particularly with reference to Figure 3, 'that'the outer surface of the prongs 4 lies at right angles to the surface of the flat body portion' 2, whereas the inner surface of the prongs 4 are tapered from the body portion Qdown to the point.

Obviously this staple may be formed by stamping the same out of flat stock, shearing the points to the configuration shown and 1 the stable 1 to the support 5, the prongs 4 are 7 thus projecting outwardly to receive the pieces of plaster board 6 and 7, whichare pushed or driven onto the prongs 4 as shown clearly in Figure 3. The sheets of plaster board 6 and Tare drivenonto the prongs 4 of the staples 1 in such mannerthat the abutting edges of the board lie in close contact with each other as at 9. The bevelled inner surfaces of the prongs 4 tend to bind the edges of the boards 6 and 7 tightly together during the driving operation.

If new there should be a shrinkage or Warping or other distortion on the part of the supporting stud 5, the elongated opening 3 in the staple 1 will permit such shrinkage or distortion relative to the staple 1, without effect upon such staple, which is thus left free of such motion, to hold and clinch the abutting edges of the boards 6 and '7 tightly together, thus preventing the opening up of a crack between these abutting edges of the boards. A filler or panel is therefore unnecessary at the abutting edges of pieces of plaster boards when my improved staples are used.

By my invention, I have provided means whereby adjacent sheets of plaster board may be securely clinched together edge to edge, without danger of the edges pulling away due to shrinkage and other causes, and leavin g the front sides of the boards free of marl:- ings or unsightly fastening means.

By the terms plaster board or compo board, I have referred to any form of composition board material of well known make, used for the purpose described.

Of course my improved staple is obviously adaptable to many other uses, and to changes in form without departing from the spirit and scope of my invention. 1 do not limit myself therefore to the exact form and use herein shown and described, other than by the appended claim.

I claim A staple comprising a fiat body portion having an elongated opening therein, prongs at the ends of said body portion. said prongs having an outer surface at right angles to said body portion and an inner surface tapering from said body portion to the free end of said prongs.

RAYMOND W. J ElVELL. 

